<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>
<script>
    var obj = {
        color: {
            red: '红色'
        }
    }
    // 1.用Object.assign({},obj)
    // const newObj1 = Object.assign({}, obj)
    // 2.直接赋值
    const newObj1 = obj
    newObj1.color.red = '黄色'
    console.log(obj);
    console.log(newObj1);
</script>

</html>